megahertz

Từ điển Oxford Advanced Learner 8th

mega·hertz [megahertz] BrE [ˈmeɡəhɜːts] NAmE [ˈmeɡəhɜːrts] noun (pl. mega·hertz)(abbr.MHz)
a unit for measuring radio waves and the speed at which a computer operates; 1 000 000 ↑hertz